Load simulation device and load system

Abstract

The utility model discloses a load simulation device and a load system. The load simulation device comprises an input power supply; the to-be-tested driver is connected with the input power supply and used for receiving power supplied by the input power supply, and the to-be-tested driver comprises at least one power shaft; the at least one to-be-tested motor is arranged corresponding to the at least one power shaft, and the to-be-tested motor is connected with the corresponding power shaft, so that the to-be-tested motor is connected with the corresponding to-be-tested driver; the at least one test assembly is arranged corresponding to the at least one to-be-tested motor, and the test assembly is connected with the corresponding to-be-tested motor and the input power supply; wherein the test assembly comprises a load motor and a load driver, the load motor is connected with the to-be-tested motor, and the load driver is connected with the load motor and the input power supply and is used for receiving operation information of the load motor, determining an output torque based on the operation information of the load motor and transmitting the output torque to the load motor. Through the above mode, the accuracy of simulating the real load is improved.

Description

Technical Field

[0001] This application relates to the field of servo drive technology, and in particular to a load simulation device and load system. Background Technology

[0002] Embroidery machine drivers play a crucial role in the embroidery process, directly impacting embroidery quality and efficiency. Currently, embroidery machine drivers are typically powered by AC power, driving servo motors. In actual operation, the load on the embroidery machine varies with factors such as embroidery patterns, the number of needles, and the type of thread, placing high demands on the driver's dynamic response and power regulation.

[0003] Existing technology typically adjusts the output power of an embroidery machine driver by changing the resistance value of the load resistor to approximate the estimated average power of the embroidery system. However, the actual load of an embroidery machine varies constantly with the embroidery pattern, and the method of changing the load resistor value has low accuracy in simulating the real load, resulting in inaccurate performance testing and optimization of the embroidery machine driver. Utility Model Content

[0004] This application mainly provides a load simulation device and load system to solve the problem of low accuracy in simulating real loads.

[0005] This application provides a load simulation device, comprising:

[0006] Input power;

[0007] The driver under test is connected to the input power supply and is used to receive power from the input power supply. The driver under test includes at least one drive shaft.

[0008] At least one motor under test is provided corresponding to the at least one drive shaft, and the motor under test is connected to the corresponding drive shaft so that the motor under test is connected to the driver under test;

[0009] At least one test component is provided corresponding to the at least one motor under test, and the test component is connected to the corresponding motor under test and the input power supply respectively;

[0010] The test component includes a load motor and a load driver. The load motor is connected to the motor under test, and the load driver is connected to both the load motor and the input power supply. The load driver is used to receive the operating information of the load motor, determine the output torque based on the operating information of the load motor, and transmit the output torque to the load motor.

[0011] The test assembly also includes a coupling, through which the load motor is connected to the corresponding motor under test, so that the load motor and the motor under test form a counter-drive relationship.

[0012] The first end of the motor under test is connected to the corresponding power shaft via a first power line, the second end of the motor under test is connected to the driver under test via a first encoder line, and the third end of the motor under test is connected to the first end of the load motor via the coupling.

[0013] The input power supply powers the driver under test, the power shaft outputs power through the first power line, the motor under test rotates, and drives the load motor to rotate through the coupling.

[0014] The second end of the load motor is connected to the first end of the load driver via a second power line, the third end of the load motor is connected to the second end of the load driver via a second encoder line, and the third end of the load driver is connected to the input power supply.

[0015] The input power supply powers the load driver, and the load driver receives the operating information of the load motor through the second encoder line. The load motor receives the output torque through the second power line. The motor under test receives the output torque through the coupling and transmits the operating information of the motor under test to the driver under test through the first encoder line, so that the driver under test controls the output power of the power shaft based on the operating information of the motor under test.

[0016] The load driver includes a bus capacitor. The motor under test drives the load motor to rotate through the coupling, generating electrical energy. The electrical energy is transmitted to the bus capacitor through the second power line, and the bus capacitor is charged.

[0017] The load driver further includes a braking circuit, and the test component further includes a braking resistor, which is connected to the braking circuit so that the braking resistor is connected to the load driver.

[0018] The braking circuit is used to transmit the voltage of the bus capacitor to the braking resistor when the bus capacitor is charging, and the bus capacitor is discharging.

[0019] This application also provides a load system, including the load simulation device described above.

[0020] The beneficial effects of this application are as follows: The load simulation device of this application includes an input power supply; a driver under test (DUT) connected to the input power supply for receiving power from the input power supply, the DUT including at least one drive shaft; at least one motor under test (DUT) corresponding to the at least one drive shaft, the DUT connected to the corresponding drive shaft so that the DUT is connected to the corresponding DUT; and at least one test component corresponding to the at least one DUT, the test component being connected to the corresponding DUT and the input power supply respectively; wherein, the test component includes a load motor and a load driver, the load motor being connected to the DUT, and the load driver being connected to both the load motor and the input power supply, for receiving the operating information of the load motor, determining the output torque based on the operating information of the load motor, and transmitting the output torque to the load motor. By connecting the load motor to the DUT and the load driver to the load motor, the load driver can receive the operating information of the load motor, thereby determining the output torque and transmitting it to the load motor, which can accurately simulate various complex load conditions encountered by the embroidery machine in actual operation, improving the accuracy of simulating real loads, thus making the performance testing and optimization of the embroidery machine driver more precise. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0022] Figure 1 This is a schematic diagram of the structure of an embodiment of the existing load device provided in this application;

[0023] Figure 2 This is a schematic diagram of an embodiment of the load simulation device provided in this application. Detailed Implementation

[0024] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0026] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly indicating the number, specific order, or primary and secondary relationship of the indicated technical features.

[0027] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0028] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0029] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0030] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0031] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a connection between two components or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0032] Please see Figure 1 As shown, Figure 1This is a schematic diagram of an embodiment of the existing load device provided in this application. The load device 100 of this embodiment includes an embroidery machine driver 110, at least one tested motor 120, at least one load motor 130, and at least one resistive load 140. The embroidery machine driver 110 includes at least one output power shaft, and the at least one tested motor 120 corresponds one-to-one with the at least one output power shaft. The tested motor 120 is connected to the corresponding output power shaft via a first power line 150 and an encoder line 160. For example, as... Figure 1 As shown, the embroidery machine driver 110 includes three output power axes: the main shaft, the X-axis, and the Y-axis.

[0033] At least one load motor 130 corresponds to at least one tested motor 120, and the load motor 130 is connected to the corresponding tested motor 120 via a coupling 170. At least one resistive load 140 corresponds to at least one load motor 130, and the resistive load 140 is connected to the corresponding load motor 130 via a second power line 180.

[0034] In some embodiments, AC power supply 190 supplies power to embroidery machine driver 110, and the spindle of embroidery machine driver 110 outputs power, which enables the tested motor 120 to operate at its rated speed through the first power line 150 and encoder line 160. The tested motor 120 drives the load motor 130 through coupling 170, causing the load motor 130 to rotate and generate electricity. The electricity generated by the load motor 130 is consumed on the resistive load 140 through the second power line 180.

[0035] At its rated speed, the tested motor 120 of the load device 100 is adjusted by changing the resistance value of the resistive load 140, i.e., changing the resistance of the load structure, so that the average power output of the embroidery machine driver 110 is close to the average power estimated by the embroidery system. However, the actual load of the embroidery machine changes constantly with the embroidery pattern. The method of changing the resistance value of the load has low accuracy in simulating the actual load, resulting in inaccurate performance testing and optimization of the embroidery machine driver 110.

[0036] This application provides a load simulation device; please refer to [link / reference]. Figure 2 As shown, Figure 2 This is a schematic diagram of an embodiment of the load simulation device provided in this application. The load simulation device 1 of this embodiment includes an input power supply 10, a driver under test 20, at least one motor under test 30, and at least one test component 40.

[0037] The input power supply 10 includes, but is not limited to, AC power.

[0038] The driver under test 20 is connected to the input power supply 10 and is used to receive power from the input power supply 10. The driver under test 20 includes at least one drive shaft.

[0039] The driver under test 20 includes, but is not limited to, an embroidery machine driver. In some embodiments, the input power supply 10 supplies power to the driver under test 20 so that the drive shaft of the driver under test 20 outputs power. For example, such as Figure 2 As shown, the driver under test 20 includes three power axes: a spindle, an X-axis, and a Y-axis, which are used to achieve three-way motion control.

[0040] At least one motor under test 30 is correspondingly set with at least one drive shaft, and the motor under test 30 is connected to the corresponding drive shaft so that the motor under test 30 is connected to the driver under test 20.

[0041] In some embodiments, at least one motor under test 30 corresponds one-to-one with at least one power shaft of driver under test 20, and the motor under test 30 is connected to the corresponding power shaft, so that the motor under test 30 is connected to driver under test 20; at this time, the input power supply 10 supplies power to driver under test 20, and driver under test 20 outputs power through the power shaft to drive motor under test 30.

[0042] For example, such as Figure 2 As shown, the load simulation device 1 includes three motors under test 30, and the driver under test 20 includes three power shafts. The three motors under test 30 correspond one-to-one with the three power shafts, and the three motors under test 30 are respectively connected to the corresponding power shafts so that the driver under test 20 drives the motors under test 30 through the power shafts.

[0043] At least one test component 40 is configured to correspond to at least one motor under test 30, and the test component 40 is connected to the corresponding motor under test 30 and the input power supply 10 respectively.

[0044] In some embodiments, at least one test component 40 corresponds one-to-one with at least one motor under test 30, the test component 40 is connected to the corresponding motor under test 30, and the test component 40 is connected to the input power supply 10; at this time, the input power supply 10 supplies power to the test component 40.

[0045] For example, such as Figure 2 As shown, the load simulation device 1 includes three test components 40 and three motors under test 30, with each of the three test components 40 corresponding to one of the three motors under test.

[0046] The test component 40 includes a load motor 41 and a load driver 42. The load motor 41 is connected to the motor under test 30. The load driver 42 is connected to the load motor 41 and the input power supply 10 respectively. It is used to receive the operating information of the load motor 41, determine the output torque based on the operating information of the load motor 41, and transmit the output torque to the load motor 41.

[0047] In some embodiments, the input power supply 10 simultaneously supplies power to the driver under test 20 and the load driver 42. The driver under test 20 outputs power to the motor under test 30 through the power shaft. The motor under test 30 rotates, driving the load motor 41 connected to the motor under test 30 to rotate and generate electricity. At this time, the load driver 42 operates in torque mode. The load driver 42 can receive the operating information of the load motor 41 and control the output torque of the load motor 41 according to the operating information of the load motor 41, thereby hindering the operation of the motor under test 30 and matching it with the load requirements of the motor under test 30.

[0048] The operating information of the load motor 41 includes, but is not limited to, position changes. In some embodiments, the load driver 42 converts the operating information of the load motor 41 into acceleration and velocity, and then fits it into a control algorithm to control the magnitude and direction of the output torque of the load motor 41. The load motor 41 feeds back the output torque to the motor under test 30, hindering the operation of the motor under test 30. The motor under test 30 feeds back its operating information to the driver under test, thereby controlling the power of the drive shaft to simulate a real load. For example, the formula of the control algorithm is: K1a + K2v + C; where K1 and K2 are coefficients, C is a constant, a is acceleration, and v is velocity.

[0049] In this embodiment, by connecting the load motor 41 to the motor under test 30 and the load driver 42 to the load motor 41, the load driver 42 can receive the operating information of the load motor 41, thereby determining the output torque and transmitting it to the load motor 41. This can accurately simulate various complex load conditions encountered by the embroidery machine in actual operation, improve the accuracy of simulating real loads, and make the performance testing and optimization of the embroidery machine driver more accurate.

[0050] According to some embodiments of this application, the test assembly 40 further includes a coupling 43, through which the load motor 41 is connected to the corresponding motor under test 30, so that the load motor 41 and the motor under test 30 form a drag-to-pull relationship.

[0051] In some embodiments, the input shaft of the load motor 41 is connected to the output shaft of the corresponding motor under test 30 via a coupling, so that the rotational power of the motor under test 30 is transmitted to the load motor 41, and the output torque of the load motor 41 is transmitted to the motor under test 30, thereby forming a drag-and-pull structure.

[0052] In this embodiment, the load motor 41 and the motor under test 30 are connected together by the coupling 43 to form a drag structure, which can transmit torque and rotate synchronously, thereby enabling the load motor 41 to accurately simulate the load of the motor under test 30.

[0053] According to some embodiments of this application, the first end of the motor under test 30 is connected to the corresponding power shaft through the first power line 11, the second end of the motor under test 30 is connected to the driver under test 20 through the first encoder line 12, and the third end of the motor under test 30 is connected to the first end of the load motor 41 through the coupling 43.

[0054] For example, such as Figure 2 As shown, the spindle of the driver under test 20 is connected to the first end of the motor under test 30 via the first power line 11, and the driver under test 20 is also connected to the second end of the motor under test 30 via the first encoder line 12. The third end of the motor under test 30 is connected to the load motor 41 of the test assembly 40 via the coupling 43. The connection method of the X-axis and Y-axis is the same as that of the spindle, and will not be described again here.

[0055] According to some embodiments of this application, the input power supply 10 supplies power to the driver under test 20, the power shaft outputs power through the first power line 11, the motor under test 30 rotates, and drives the load motor 41 to rotate through the coupling 43.

[0056] This embodiment, through the connection method between the power shaft and the first power line 11, and the mechanical characteristics of the coupling 43, can effectively avoid simulation errors caused by unstable power transmission or inaccurate load feedback, thus ensuring the stability and reliability of the entire load simulation device 1.

[0057] According to some embodiments of this application, see Figure 2 As shown, in this embodiment, the second end of the load motor 41 is connected to the first end of the load driver 42 via the second power line 13, the third end of the load motor 41 is connected to the second end of the load driver 42 via the second encoder line 14, and the third end of the load driver 42 is connected to the input power supply 10.

[0058] According to some embodiments of this application, the input power supply 10 supplies power to the load driver 42, and the load driver 42 receives the operating information of the load motor 41 through the second encoder line 14. The load motor 41 receives the output torque through the second power line 13. The motor under test 30 receives the output torque through the coupling 43 and transmits the operating information of the motor under test 30 to the driver under test 20 through the first encoder line 12, so that the driver under test 20 controls the power shaft to output power based on the operating information of the motor under test 30.

[0059] For example, such as Figure 2As shown, the input power supply 10 simultaneously supplies power to both the driver under test 20 and the load driver 42. The spindle output power of the driver under test 20 is transmitted to the motor under test 30 via the first power line 11. The motor under test 30 rotates and drives the load motor 41 to rotate and generate electricity through the coupling 43. The load motor 41 feeds back its operating information to the load driver 42 via the second encoder line 14. The load driver 42 determines the output torque based on its operating information and transmits the output torque to the load motor 41 via the second power line 13. The load motor 41 transmits the output torque to the motor under test 30 via the coupling 43, hindering the operation of the motor under test 30. The motor under test 30 feeds back its operating information to the driver under test 20 via the first encoder line 12, so that the driver under test 20 controls the spindle output power based on the operating information of the motor under test 30, thereby simulating a real load.

[0060] In this embodiment, the load driver 42 receives the operating information of the load motor 41 through the second encoder line 14, and the load motor 41 receives the output torque through the second power line 13. This enables the load driver 42 to dynamically adjust the output torque according to the actual operating state of the load motor 41, thereby more realistically simulating the load changes of the embroidery machine in actual operation and providing a test environment close to the actual working conditions for the driver under test 20.

[0061] According to some embodiments of this application, the load driver 42 includes a bus capacitor (not shown). The motor under test 30 drives the load motor 41 to rotate through the coupling 43, generating electrical energy. The electrical energy is transmitted to the bus capacitor through the second power line 13, and the bus capacitor is charged.

[0062] In some embodiments, the motor under test 30 drives the load motor 41 to rotate and generate electricity through the coupling 43. The generated electrical energy returns to the bus capacitor inside the load driver 42 through the second power line 13, and the bus capacitor voltage increases, that is, the bus capacitor is charged.

[0063] According to some embodiments of this application, the load driver 42 further includes a braking circuit (not shown), and the test component 40 further includes a braking resistor 44 connected to the braking circuit so that the braking resistor 44 is connected to the load driver 42.

[0064] The braking resistor 44 is configured to correspond to the test component 40, such that the braking resistor 44 is connected to the load driver 42 of the corresponding test component 40. Figure 2 As shown.

[0065] According to some embodiments of this application, the braking circuit is used to transfer the voltage of the bus capacitor to the braking resistor 44 when the bus capacitor is charging and the bus capacitor is discharging.

[0066] In some embodiments, the bus capacitor is charged, that is, the voltage of the bus capacitor increases, and the increased voltage is transmitted to the braking resistor 44 through the braking circuit inside the load driver 42 to release energy, that is, the bus capacitor is discharged.

[0067] In this embodiment, the braking resistor 44 can quickly dissipate the remaining electrical energy in the bus capacitor, thereby stabilizing the bus voltage within a safe range and improving the stability and reliability of the load simulation device 1.

[0068] Another embodiment of this application provides a load system, including the load simulation device 1 described in the above embodiment.

[0069] In summary, this application connects the load motor 41 to the motor under test 30 and the load driver 42 to the load motor 41. The load driver 42 can receive the operating information of the load motor 41, determine the output torque, and transmit it to the load motor 41. This can accurately simulate various complex load conditions encountered by the embroidery machine in actual operation, improve the accuracy of simulating real loads, and make the performance testing and optimization of the embroidery machine driver more accurate.

[0070] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A load simulation device, characterized by, The load simulation device comprises: an input power supply; a to-be-tested driver connected with the input power supply and configured to receive power supply from the input power supply, the to-be-tested driver comprising at least one power shaft; at least one to-be-tested motor corresponding to the at least one power shaft, the to-be-tested motor being connected with the corresponding power shaft so as to connect the to-be-tested motor with the to-be-tested driver; at least one test assembly corresponding to the at least one to-be-tested motor, the test assembly being connected with the corresponding to-be-tested motor and the input power supply respectively; wherein the test assembly comprises a load motor and a load driver, the load motor being connected with the to-be-tested motor, the load driver being connected with the load motor and the input power supply respectively, configured to receive operation information of the load motor, determine output torque based on the operation information of the load motor and transmit the output torque to the load motor.

2. The load simulation apparatus according to claim 1, characterized by, The test assembly further comprises a coupling, the load motor being connected with the corresponding to-be-tested motor through the coupling so as to form a pair of to-be-tested motor and load motor.

3. The load simulation apparatus according to claim 2, characterized by, A first end of the to-be-tested motor is connected with the corresponding power shaft through a first power line, a second end of the to-be-tested motor is connected with the to-be-tested driver through a first encoder line, and a third end of the to-be-tested motor is connected with a first end of the load motor through the coupling.

4. The load simulation device according to claim 3, characterized by The input power supply supplies power to the to-be-tested driver, the power shaft outputs power through the first power line, the to-be-tested motor rotates and drives the load motor to rotate through the coupling.

5. The load simulation apparatus according to claim 3, wherein A second end of the load motor is connected with a first end of the load driver through a second power line, a third end of the load motor is connected with a second end of the load driver through a second encoder line, and a third end of the load driver is connected with the input power supply.

6. The load simulation device of claim 5, wherein The input power supply supplies power to the load driver, the load driver receives operation information of the load motor through the second encoder line, the load motor receives the output torque through the second power line, the to-be-tested motor receives the output torque through the coupling, and the to-be-tested motor transmits operation information of the to-be-tested motor to the to-be-tested driver through the first encoder line, so that the to-be-tested driver controls the power shaft to output power based on the operation information of the to-be-tested motor.

7. The load simulation device of claim 6, wherein The load driver comprises a bus capacitor, the to-be-tested motor drives the load motor to rotate through the coupling, generates electric energy, the electric energy is transmitted to the bus capacitor through the second power line, and the bus capacitor is charged.

8. The load simulation device of claim 7, wherein, The load driver further comprises a brake circuit, and the test assembly further comprises a brake resistor, the brake resistor being connected with the brake circuit so as to be connected with the load driver.

9. The load simulation device of claim 8, wherein, The brake circuit is configured to transmit voltage of the bus capacitor to the brake resistor when the bus capacitor is charged, and the bus capacitor is discharged.

10. A load system characterized by, The load simulation device comprises the load simulation device according to any one of claims 1-9.

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